
Res Corse |

It depends of it's hardness I'd guess skin is not leather (in any terms).
If it is a scaled humanoid skin then maybe (if putting in thickness / hardness factors) it could count as thin light scale armor, but still not leather - otherwise I'd guess it would count originally as clothing made from skin - you could enchant it with magic I'd assume and then make up a good back story how it is made of a fallen angel skin that the son of a devil was tough to put down and took enormous effort of all the heroes etc which would make it 'non-evil' I guess?
Clothing isn't evil based on whatever it is made of.
If you curse it+enchant or just decide it is evil and act like it is evil when ever you encounter it is can then probably be evil _to you_, probably some it doesn't matter at all, some might consider it a bit 'not in the style', some repulsive etc.
Skin suit - add fancy additional descriptive names after it.
If you magically enchant it provide same armor factors than some other armor it is magical.
Hope these thoughts gave some insight bonus to your question.
Cheers,
- Res